Multiple factors play and determine if you will make money. The 3 most important things about trading which you need is
*To be able to manage your emotions and have a good headspace
*Perfect money management (VERY IMPORTANT)
*Entries and everything that falls into that category. Risk Management, Exiting, NEWS AVOIDANCE, etc
So my overall opinion is that there isn't one thing that you treat more important, Many things determine how your system will perform if you dint have Money management but your system and psychology and trading entries and so forth are good but you don't have any money management you won't make no money long term.
You get the point I'm sure so make sure everything up to standard and you will be making consistent profits